packer: say the pause before next provisioner
packer: configure the build with the paused provisioner
website: update for pause_before
Merge pull request #739 from mitchellh/f-prov-pause-before

Provisioner "pause_before" meta-parameter
Update CHANGELOG
packer/rpc: missing format for muxconn
packer/rpc: don't use stream ID zero [GH-738]
packer/rpc: if stream ID 0 is used, paic
packer/rpc: communicator shouldn't conncet to ID 0
builder/amazon/chroot: mount in device-specific places
builder/amazon: alphabetize
builder/virtualbox: move to iso/ folder
builder/virtualbox/iso: rename package
plugin/builder-virtualbox: new package
builder/virtualbox: add common package, common Artifact
builder/virtualbox/common: Move Driver here
builder/virtualbox/common: StepOutputDir
builder/virtualbox/common: StepSuppressMessages
builder/virtualbox/common: move outputdir config to common
builder/virtualbox: floppy files config